Question about 2004 Lexus ES 330

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Brake fluid contamination--stucking brake--driver's side

"severe brake fluid contamination" 62000m,never changed or added to --reason for this problem --what needs to be done
rotor heated up(fire engine red--smoking)

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If it is just in the master cylinder, replace it and flush with new fluid. The proper way would be to replace the master, the abs unit, the hoses and all 4 calipers. The proper way is expensive, but thorough.

Posted on Jul 02, 2009

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  • Lexus Master
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This is a stuck brake caliper piston not fluid contamination

Posted on Jul 02, 2009

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Why my front brakes are overheating after I replaced/serviced the rear brakes pads ?

Several possibilities exist. Most likely is that you did NOT open the bleeder valves in the rear calipers when you retacted the pistons in the rear calipers. This forces old, dirty, contaminated brake fluid back up into the system. This debris is now stuck in either the ABS control unit or the master cylinder and is causing the front brakes to be slightly applied at all times. You can try to THROUGHLY flush out the brake fluid to remove the contamination. It will take about a gallon of brake fluid to do this. That "might" fix the problem. Otherwise, you need to figure out if the problem is with the master cylinder or the ABS control unit and replace the bad unit.

Aug 22, 2014 | 1989 Mazda MPV


Brake System Maintenance For Safety

The brake fluid that we have inherited is rather a poor compromise dating back many years, and unfortunately there is little we can do about it because any replacement will not be compatible with the Glycol Ether based fluid we use. It has most of the qualities needed in a hydraulic brake fluid, such as some lubricity, high boiling point, high flash point and very low compressibility, but it has several very bad properties, the worst being that it is reasonably hygroscopic - it absorbs moisture from the air. This moisture forms globules and eventually droplets of water which find their way into the lower parts of the brake system, the wheel brake cylinders, and there it sits, peacfully eating into the cylinder walls.<br /> To overcome this danger and protect the braking system of any vehicle, it is imperative that the brake fluid should be changed regularly, at least every two years, and in moist climates, once a year.<br /> What this entails is removing the old fluid from the reservoir, refilling it with fresh fluid and then bleeding each wheel until new fluid is seen coming out of the bleeder tube. During this operation it is important to ensure that the reservoid is kept full or air will be introduced into the brake system and the bleeding process will have to be done over again.<br /> This may sound like a major task, but it will save costly wheel cylinder replacements and prevent the danger of brake failure due to contaminated friction surfaces or through total fluid loss because of leaking corroded brake components. <br /> As little as 4% contamination will lower the boiling point of the brake fluid from 230 deg. Celsuis to about 150 deg. Celsius, greatly increasing the possibility of brakes fading or locking under emergency conditions.<br /> Water contaminated fluid also damages the rubber flex hoses in the system leading to clogging or perishing of the pipes with the possibility of brakes locking and causing skidding.

on Mar 17, 2011 | Acura CL Cars & Trucks

1 Answer

Why do my brakes feel soft and go down to the floor when i apply light pressure but work normal if i get on them hard? I accidently put power steering fluid in when i had a constant leak that i fixed ...

If you've pored or added anything other than brake fluid to the reservoir, then you have contaminated your brake system and may have to replace several components if not the entire system. The reason why the pedal is dropping to the floor is because the seals are leaking internal of your master cylinder. If you wait too long to drain the system, you may have to replace the entire brake system hardware.

Jul 28, 2011 | Ford Ranger Cars & Trucks

2 Answers

Can I add brake fluid if it's low, like adding oil and where do I put the brake fuild?

Yes, you will need to put it in the reservoir for brake fluid, it will look something like this.


Make sure you use the correct type of brake fluid as listed in your owners manual. (Probably DOT3)

May 04, 2011 | 2005 Pontiac Grand Prix

2 Answers

What are the steps to flushing the brake system? or site?

There is a drain plug on the brakes. You have to remove the drain plug and pump the brakes until clean fluid comes out, each wheel at a time. I would let a brake place do it. They have the tool to put clean fluid in and you don't need anyone to pump the brakes.

Sep 03, 2010 | 2004 Pontiac Grand Prix

1 Answer

Back brakes lock up

There are several conditions that can cause this to happen. You want to start out by checking the parking brake assembly, particularly the cable for the right rear or passenger side brake. Make certain the cable moves freely when the park brake is applied and released completely when the park brake is disengaged.
Next, remove the rear brake drum and check for any oil, grease or brake fluid contamination of the brake shoes. Any contamination of this type will cause the brake to hang up when applied.
If that checks good, make sure the brake system hardware if working properly and components have not dislodged from there installed position be sure there are no broken return springs or very rusted and weak components.
Generally what happens is a wheel cylinder begins to leak, contaminated the shoes and cause them to become sticky when the shoe contacts the drum or a return spring breaks or comes off for various reasons.
Check it out and let me know.

Oct 04, 2009 | 1997 Pontiac Sunfire

1 Answer

Rear drum brake locked up . just drivers side. emergency brake seemed ok until i broke it but the brake was locked before i messed with the emergency brake. drum will not move even when driving car

remove the brake line to release the pressure. Look at the brake fluid to see if its contaminated. Its common for when the wrong fluid is added to brake fluid you will cause all the rubber parts to swell. and turn the fluid black. You may need to replace all brake components if this is the case. If the fluid is not contaminated you may be able to just release the pressure and wiggle the drum or pry to get it off.. Then you may just need to replace the wheel cylinder and or the brake hose. When you get the drum off you may notice the wheel cylinder has been leaking. With the line open press on the brake to verify the line is colgged or not.. When done bleed the whole system

Jul 15, 2009 | 2000 Kia Sephia

2 Answers

1997 Chevy 1500

you should never have to add tranny fluid unless it leaks chevy recomends replaceing the filter and fluid every 30,000 miles

Jun 11, 2009 | 1997 Chevrolet C1500

1 Answer

The Abs sign is on during driving what is wrong with it

If the brake warning light comes on when you apply the brakes, or is on continuously, it means that hydraulic pressure has been lost in one side of the brake system or that the fluid level in the master cylinder is dangerously low (due to a leak somewhere in the brake system). In either case, the fluid level in the master cylinder should be checked. Adding brake fluid to the master cylinder reservoir may temporarily solve the problem. But if there's a leak, the new fluid will soon be lost and the warning light will come back on.
Brake fluid leaks are serious because they may cause the brakes to fail! So avoid driving the vehicle until the system can be inspected to determine what's wrong. Leaks can occur in brake hoses, brake lines, disc brake calipers, drum brake wheel cylinders or the master cylinder itself. Wet spots at hose or line connections would indicate a leak that needs to be fixed.
Leaking brake fluid can also contaminate the brake linings, causing them to slip or grab. The uneven braking action that results may cause the vehicle to veer to one side when the brakes are applied. Brake shoes or pads that have been contaminated with brake fluid cannot be dried out and must be replaced.

Apr 26, 2009 | 2005 Toyota ECHO

1 Answer

Front Brakes

You may have this problem due to contaminated (and overheated) brake fluid. Most people don't usually flush out the brake system, which should be done whenever u do a brake job. Since yours are overheating also, that has to be diminishing the life of the fluid. Brake fluid will also absorb moisture (which is one reason u see instructions to use brake fluid from 'a sealed container.') So, be sure to thoroughly flush the system when u replace components this time, the contaminated fluid has been causing the calipers to 'drag' which wears out the brake pads prematurely.

Oct 28, 2008 | 1995 Dodge Caravan

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